diff --git a/.github/workflows/nginx.yml b/.github/workflows/nginx.yml
index 8ec978f3d..40c49348f 100644
--- a/.github/workflows/nginx.yml
+++ b/.github/workflows/nginx.yml
@@ -1,6 +1,7 @@
 name: nginx instrumentation CI
 
 on:
+  workflow_dispatch:
   push:
     branches: "*"
     paths: